Created
November 8, 2011 10:45
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redefine String#+
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| $ irb | |
| ruby-1.8.7-p352 :001 > str = 'a' | |
| => "a" | |
| ruby-1.8.7-p352 :002 > str + 'b' | |
| => "ab" | |
| ruby-1.8.7-p352 :003 > p str | |
| "a" | |
| => nil | |
| ruby-1.8.7-p352 :004 > class String | |
| ruby-1.8.7-p352 :005?> def +(other) | |
| ruby-1.8.7-p352 :006?> self.concat(other) | |
| ruby-1.8.7-p352 :007?> end | |
| ruby-1.8.7-p352 :008?> end | |
| => nil | |
| ruby-1.8.7-p352 :009 > str2 = 'a' | |
| => "a" | |
| ruby-1.8.7-p352 :010 > str2 + 'b' | |
| => "ab" | |
| ruby-1.8.7-p352 :011 > p str2 | |
| "ab" | |
| => nil |
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